Reserva Particular del Patrimonio Natural (RPPN) Fazenda Rio Negro.22/05/09; Mato Grosso del Sur; 7,000 ha; 19°33'S 056°13'W. Reserva Privada del Patrimonio Natural (RPPN). A well-preserved example of the Pantanal of Nhecolândia, a subregion of the Brazilian Pantanal that is characterized by the abundant presence of freshwater or alkaline lakes (baías' and salinas', respectively), as well as permanent and intermittent rivers. The site hosts more than 400 species of plants, 350 of birds and 70 of mammals. Among them stand out threatened species, such as the Giant Otter (Pteronura brasiliensis), Marsh deer (Blastocerus dichotomus), and Hyacinth Macaw (Anodorhynchus hyacinthinus). Migratory bird species are also present in the site, e.g. Tringa melanoleuca, Himantopus melanurus, Tachybaptus dominicus, Dendrocygna viduatam andCoscoroba coscoroba. Cattle farming is related to two of the main threats to the site: uncontrolled fires caused by neighboring ranches and the introduction of exotic herbs. In the area hunting and fishing are legally banned. The management plan is currently under revision. Ramsar site no. 1864. Most recent RIS information: 2009.